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#1
11-21-2005, 09:46 PM
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compression leak at injector
After replacing all the injectors on my 603 I have one where tiny bubbles emerge from around the base of the injector. I cleaned the seats and used new metal sealing washers. If the prechamber is leaking, will the bubbles come from around the base of the injector or from furthur out? Maybe I should torque it a little more? I am at 80NM now. Also, will a tiny leak there be a problem? The engine runs fine.
Thanks, Brian
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Brian 87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017 02 F350 Powerstroke 180K 05 Chevy Express 1 ton w/Royal Utility box 120K 08 Infiniti FX-35 40K 15 Golf Sportwagen TDI 35K 10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K 
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#2
11-22-2005, 06:15 PM
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any advice?...anyone???......Please????
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Brian 87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017 02 F350 Powerstroke 180K 05 Chevy Express 1 ton w/Royal Utility box 120K 08 Infiniti FX-35 40K 15 Golf Sportwagen TDI 35K 10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K
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#3
11-22-2005, 11:39 PM
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injector leak at head
First check and make sure the fuel isn't coming from the fuel return hoses and running down to the base of the injector. Good head, gasket, injector base and torque, then you should see no leaking (check injector line's themselves for leaks, but the return hoses are very vulnerable to leaking.
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#4
11-23-2005, 12:03 AM
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"bubbles"
Dual post this one on the "TECH" side!
['could be as easy as a bad "Heat Shield"]
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#5
11-23-2005, 08:54 AM
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Ralph sorry I didn't mean fuel leak, it's a compression leak. The tiny bubbles are air and they appear when I spray brake cleaner around the base of the injector.
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Brian 87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017 02 F350 Powerstroke 180K 05 Chevy Express 1 ton w/Royal Utility box 120K 08 Infiniti FX-35 40K 15 Golf Sportwagen TDI 35K 10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K
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#6
11-23-2005, 09:25 AM
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i would not worry about it.definately do not overtorque your injectors.this sounds like an insignificant compression loss and it will probably seal on its own.
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#7
11-23-2005, 10:10 AM
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Unless it is leaking excessively, don't worry about it. You can replace the shims or seals under the prechamber but you need a special tool to remove them. A mechanic told me if you can hear it hissing or when wet it sprays water out, you need to reseal. If you only can tell the leak by spraying water on them and get only bubbles, it is alright. It is not a bad job at all with the right tools - slide hammer and adapter that screws in where the injector is.
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1995 S-350 370K + SOLD 1952 220B Cabriolet 39K kilometers + SOLD 1998 E300D 310K + 2012 E350 BlueTec 120K
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#8
11-23-2005, 09:46 PM
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Thanks a lot for the replies....I thought it might seal itself. Happy Turkey Day to all.
__________________
Brian 87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017 02 F350 Powerstroke 180K 05 Chevy Express 1 ton w/Royal Utility box 120K 08 Infiniti FX-35 40K 15 Golf Sportwagen TDI 35K 10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K
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